Urine is produced in the kidneys and passes through tubes called ureters into the bladder, which then evacuates it through a passage called the urethra. Crystallised stones can form in the kidney, blocking the passage of urine and causing severe pain and difficulty in urination. Flexible uretero-renoscopy is a procedure to treat kidney stones. The procedure involves the use of a minute flexible scope (tube with a camera) which is introduced through the urethra and advanced to reach the affected kidney. A laser source is introduced through the scope to fragment the kidney stones, which can pass out with the urine or are retrieved with a small wire basket. Flexible uretero-renoscopy may also be used to investigate the kidneys where a biopsy of renal tissue may be obtained.
The procedure is carried out under general anaesthesia usually as a same day procedure. There may be mild pain following the procedure for which your doctor prescribes medication. A stent may need to be temporarily placed in the ureter after surgery to keep the passage open and is later removed. This can also create some discomfort and urgency to urinate. Infection is rare and can be controlled with antibiotics.